Hi Gary, are you using my converter at [https://www.jeffersonscher.com/ffu/bookbackreader.html]? If that looks good on screen, you can go ahead and apply the .jsonlz4 directly to Firefox through the "Restore" menu. This is a complete replacement, rather than adding a new "Imported Bookmarks" folder. If the file isn't listed on the Restore list, use "Choose file" to load the old backup and replace your entire current set of bookmarks. See: [[Restore bookmarks from backup or move them to another computer]]